Problems with my digestive after eating

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Hi. I am 27 yrs old male and I want to ask some question regarding my digestive system.

Last march I noticed something. After I ate food like lunch or dinner there is always a feeling that I need to go to comfort room. I ignored it because maybe its nothing and also my last stool test is okay. As the time goes by this feeling comes and go. The pain is not severe it feels like I need to pass it and after passing I feel like im not totally empty sometimes. Recently I have this feeling like I wanna burp and fart then I noticed mucus on my stool.

What might be the meaning of these? Im really hoping it is not colon cancer. Im also looking at the IBS because this  symptomps are related to that